Home / 18,675.72-28,022.08-6,989.84

Finding the Fourth Proportional to 18,675.72, 28,022.08 and 6,989.84

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Solution

The fourth proportional to 18,675.72, 28,022.08 and 6,989.84 is: 10,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.72 : 28,022.08 = 6,989.84 : x
  2. Step 2: Convert to fraction form
    18,675.72/28,022.08 = 6,989.84/x
  3. Step 3: Cross multiply
    18,675.72x = 28,022.08 × 6,989.84
  4. Step 4: Simplify right side
    18,675.72x = 195,869,855.67
  5. Step 5: Solve for x
    x = 195,869,855.67/18,675.72
  6. Step 6: Final answer
    x = 10,487.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.